| 摘要 |
A pressure sensing system for an internal combustion engine including an intake manifold (20) and an exhaust manifold (24), with an EGR valve assembly (30) mounted thereto. A sensor housing (60) includes three absolute sensors (80, 82, 84) for measuring absolute EGR pressure, manifold absolute pressure, and fuel rail pressure. The passages (28, 68) for the EGR flow and for measuring the EGR and MAP are internal to the EGR assembly and manifolds, thus eliminating separate hoses. The orifice (76) within the EGR passages (28, 68) is located downstream of the EGR valve to allow for pressure downstream of the orifice to be MAP pressure.
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